To reset size back to normal, press and hold Ctrl while pressing “0″ (zero).

From the Mouse

(works in Firefox, Internet Explorer, Safari, and Google Chrome)

If your mouse has a scroll wheel, press and hold Ctrl while scrolling up to zoom in and down to zoom out.

Firefox

Menu

Press the Alt key to temporarily bring up the traditional Firefox menus. At the top of the Firefox window, click the View menu, then go to Zoom. Select either Zoom In, Zoom Out, or Reset for their corresponding action.

Toolbar

Right-click on an empty section of the Tab Strip, select Customize… and the Customize Toolbar window will open.

In the Customize Toolbar window, click and drag the “Zoom Controls” toolbar item to the desired place on one of your toolbars.

Click Done to save the changes to your toolbars.

You can now use the + (plus) icon on the customized toolbar to zoom in, and the – (minus) icon on the customized toolbar to zoom out.

Internet Explorer

Open the Tools menu and select Zoom. Press and hold Alt while pressing “x” to open the Tools menu.

Safari

Menu

Press the Alt key to temporarily bring up the traditional Safari menus. At the top of the Safari window, click the View menu, then go to Zoom In, Zoom Out, or Actual Size for their corresponding action.

Toolbar

Press the Alt key to temporarily bring up the traditional Safari menus, select Customize Toolbar… and the Customize Toolbar window will open.

In the Customize Toolbar window, click and drag the “Zoom” toolbar item (contains a small A and big A) to the desired place on one of your toolbars.

Click Done to save the changes to your toolbars.

You can now use the big A icon on the customized toolbar to zoom in, and the small A icon on the customized toolbar to zoom out.

Google Chrome

Click the customize and control Google Chrome button (looks like a wrench) and select the Zoom option (+ (plus) for zoom in and – (minus) for zoom out).